A heritability estimate of about 50 percent for intelligence in the general population suggests that:
A)genetics has no bearing on IQ.
B)the home is essential for the determination of IQ.
C)the difference in IQ scores within a specific group of people is due to differences in their genetic makeup.
D)heritability estimates can be used to predict improvements in IQ scores over a person's lifetime.

Question

Quizplus · Accepted Answer

A heritability estimate of 50 percent for intelligence suggests that half of the differences in IQ scores within a specific group of people can be attributed to differences in their genetic makeup. The other half is likely attributed to environmental factors such as upbringing and education. This does not mean that genetics is the sole determinant of IQ, but rather that it plays a significant role in shaping individual differences. Heritability estimates cannot be used to predict improvements in IQ scores over a person's lifetime as they only describe the degree to which genetics and environment contribute to individual differences seen in a population.

A Heritability Estimate of About 50 Percent for Intelligence in the General